As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSING 16000 FT ON CLIMB-OUT GOT AIR SYST 2 OFF, FOLLOWED BY LEVEL 2 AIR MANIFOLD 2 FAIL. NR 2 PACK WAS SELECTED OFF AT THE TIME AND NR 2 BLEED WAS ON. PER QRH LAND AT NEAREST SUITABLE AIRPORT. PERFORMED AIR SYSTEM DECAY CHECK REF AMM 36-00-01-5. TEST PASSED. ISOLATED FAULT TO NO LOOP 2 INPUT RECEIVED REF MEL 36-23-01-02.